rE 02 High
Your boiler has detected that the water pressure in the system is too low or the pressure sensor settings are incorrect, causing the unit to stop working.
Technical description: Low water pressure in heating system – parameter is adjusted wrong
Typical repair cost: £0-120 (including labour)
DIY fix possible
Check the pressure gauge; it should ideally be between 1.0 and 1.5 bar.Locate the filling loop (usually a silver flexible hose) under the boiler.Open both valves slowly to allow water into the system until the gauge reaches 1.2 bar, then close them tightly.
Protect yourself from future repair bills
A boiler cover plan would cover faults like rE 02 — no call-out fees, no surprises.
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Parts commonly replaced
- Water pressure sensor
- Filling loop hose
- Expansion vessel
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